{volist name="singleType" id="vo"}
<ul>
    <li>{$vo.type}</li>
    {volist name="single" id = 'vo1'}
    {eq name="$vo1.type" value="$vo.id"}
    <li><a href="{:url('shop/single/detail',['id'=>$vo1['id']])}" title="{$vo1.title}">{$vo1.title}</a></li>
    {/eq}
    {/volist}
</ul>
{/volist}